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CBSE Class 11-science Answered

does pressing the ground creates friction or not?
Asked by | 18 Oct, 2013, 12:13: PM
answered-by-expert Expert Answer
Pressing the ground (i.e. only vertical component of force) will result in a normal reaction from the ground. However, if there we tend to move over the ground (i.e. with some component of force along the ground), then frictiona will also come into play.
Answered by | 24 Oct, 2013, 11:54: AM

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CBSE 11-science - Physics
Respected Ma'am/Sir please clarify my doubt.
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CBSE 11-science - Physics
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CBSE 11-science - Physics
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CBSE 11-science - Physics
Two blocks of mass m=5kg and M=10 kg are connected by a string passing over a pulley B as shown. Another string connects the centre of the pulley B to the floor and passes over another pulley A as shown. An upward force F is applied at the centre of pulley A. Both the pulleys are massless. Find the acceleration of both the blocks if 1) F=100N.  2)F=500N
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Asked by sakethrockzz007 | 14 Aug, 2023, 04:30: PM
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CBSE 11-science - Physics
A block of mass m is placed on a wedge as shown. Find difference between maximum and minimum (a(max) – a(min) ) horizontal rightward acceleration of wedge for which block remains at rest with respect to wedge. (A) 10g/9 (B) g/9 (C) g (D) None of these
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Asked by sahuaryanbro1.0 | 01 Jan, 2023, 10:17: PM
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CBSE 11-science - Physics
A force 50 N acts on a body for 10 sec.what will be the change in momentum
Asked by subhankarnanda123 | 20 Dec, 2022, 08:36: PM
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CBSE 11-science - Physics
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CBSE 11-science - Physics
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CBSE 11-science - Physics
In the arrangement shown in the figure, a heavy pulley of mass M is suspended from a spring of stiffness constant K and the mass m is suspended from a string tightly wound on the pulley. If the mass m is given a small downward displacement and released, find the time period of small oscillations (Take pulley as Disc) and string does not slips on the pulley.
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Asked by alkrishna4652 | 24 Feb, 2022, 01:46: PM
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CBSE 11-science - Physics
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